diff --git a/lld/COFF/Writer.cpp b/lld/COFF/Writer.cpp
index c67fac59f92b..083839c2bab4 100644
--- a/lld/COFF/Writer.cpp
+++ b/lld/COFF/Writer.cpp
@@ -219,7 +219,7 @@ uint64_t Defined::getSecrel() {
 uint64_t Defined::getSectionIndex() {
   if (auto *D = dyn_cast<DefinedRegular>(this))
     return D->getChunk()->getOutputSection()->SectionIndex;
-  if (auto *D = dyn_cast<DefinedAbsolute>(this))
+  if (isa<DefinedAbsolute>(this))
     return DefinedAbsolute::OutputSectionIndex;
   fatal("SECTION relocation points to a non-regular symbol: " +
         toString(*this));